Even though I continue to paint traditionally I like using digital painting tools like Adobe Photoshop, Corel Sketchpad, Artrage, Corel Painter, and Autodesk Sketchbook Pro. All of them have their benefits and problems. These sketches are made with Photoshop using a regular round brush shape. I set a time limit and draw everything freehand from life. Its a good way to practice observational skills as well as honing my tablet skills. I use a Wacom Intuos.
More and more I use digital for my preliminary work even for my landscape paintings because of ease of use and the ability to keep multiple versions and ideas until I decide to paint traditionally. Digital software is just another tool to use as an artist and I think in its proper role can be quite beneficial to an artist and their creative output.
Most people I know who paint traditionally have abandoned traditional slides and print film and use digital cameras. They also use large monitors for photo ref instead of printing everything like the old days.
Paint software and hardware are no different.